I come confirming the Torah I find already there, and to make lawful for you some of what was previously forbidden to you. So have fear of Allah and obey me. (Surah Al ‘Imran: 50)
In another verse Allah informs us that the Injil revealed to Jesus (as) was a guide to the true path for the believers and to help them discern between good and evil. It was also a book that confirmed the Torah:
And we sent ‘Isa son of Maryam following in their footsteps, confirming the Torah that came before him. We gave him the Injil containing guidance and light, confirming the Torah that came before it, and as guidance and admonition for those who have fear." (Surat al-Ma’idah: 46)
The prominent people among the Children of Israel, concerned more about the rules which had become tradition, doubted what Jesus (as) had brought. That was simply because Jesus (as) did not stress the, by then, traditional rules but rather summoned people to devotion to Allah, renunciation of the world, sincerity, brotherhood and honesty. Encountering a different understanding of religion, the Jews were frustrated by what Jesus (as) advised. In the Qur'an, Allah gives an account of how Jesus (as) communicated the commands of Allah:
And when ‘Isa came with the Clear Signs, he said, "I have come to you with Wisdom and to clarify for you some of the things about which you have differed. Therefore have taqwa of (heed) Allah and obey me. Allah is my Lord and your Lord so worship Him. This is a straight path." The various factions among them differed. Woe then to those who did wrong on account of the punishment of a painful Day! (Surat az-Zukhruf: 63-65)
The sincerity and different attitude of Jesus (as) attracted people’s attention. The number of his adherents steadily increased.